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Old 05-26-2010, 08:01 PM
cn90 cn90 is offline
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Location: Omaha NE
Join Date: Mar 2006
Posts: 14,352
Mein Auto: 1998 528i 5-sp 140K+

You may have inherited the problem from the previous owner.

Most drain plugs are 20 mm long.

The exact spec is M12 x 1.5 x 18 mm
M12 = diameter of bolt is 12 mm
1.5 = the distance between 2 adjacent threads is 1.5 mm
18 mm is the length of the threaded portion (not incl. the head).

Anyway, I use:
1. Woodramps (3 layers)
2. The Oil Filter Cap: tighten until it stops and tug with 2 fingers and that is it. Personally I think 25 Nm is too much for this plastic cap.

When I have time I will write a DIY with the Title: "changing oil made ridiculously simple!".

PS: BTW, buy 2 drain plugs from dealer (keep one in the glove box as spare!).

Last edited by cn90; 05-27-2010 at 07:50 AM.
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